Darien

s7 is a different story. kinda license thing. u need to have it. it is similar to can i drive while i don't have drivers license.
cfa is all voluntary. technically they cannot fire you because u failed to get it in 5 years. but i guess in real world, they will find some other reasons to let-go.
of course you can always find a lawyer and sue the employer. i think u can always get something out of it.